Example of Array, Vector and Hash Table in Java

 As salamo alaikum wa rahmatullah

Example of Array, Vector and Hash Table

package collections.demo;

import java.util.Hashtable;

import java.util.Vector;

public class CollectionDemo {

public static void main(String[] args) {

// TODO Auto-generated method stub

int arr[]=new int[] {1,2,3,4,5,6};

Vector<Integer> v=new Vector();

Hashtable <Integer,String> hTable=new Hashtable();

// Adding element into the vector

v.add(1);

v.add(2);

v.add(3);

System.out.println(v);

v.set(0, 3);

System.out.println(v);

// Adding element into the HashTable

hTable.put(1, "Selenium");

hTable.put(2, "Java");

hTable.put(3, "OOSPS");

hTable.put(4, "Selenium");

System.out.println(hTable);

String s=hTable.values().toString();

System.out.println("Values of Hash Table :- "+s);

// Array instance creation requires []

// While vector and HashTable require ()

// Vector element insertion required addElement()

// but HashTable element insertion require put()

// Accessing the first element of the 

// array, vector and HashTable

System.out.println(arr[0]);

System.out.println(v.elementAt(0));

System.out.println(hTable.get(1));

}

}

--

Output

[1, 2, 3]

[3, 2, 3]

{4=Selenium, 3=OOSPS, 2=Java, 1=Selenium}

Values of Hash Table :- [Selenium, OOSPS, Java, Selenium]

1

3

Selenium

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Jazak allah khair